Propeller.



W. W. DUKESHIER.

PROPELLER.

APPLICATION FILED IUNE 1. 1917.

Patented July 23, 1918. 2 SHEETS-SHEET 1 W. W. DUKESHIER.

PROPELLER.

APPLICATION FILED JUNE 1.

Patented July 28, 1918.

2 SHEETS-SHEET 2 Sumo/m W mp u]: whiz/1 7 following to be a full, clear,and exact de- EE T PATENT OFFICE. Y

WINTWOBTH W. DUKESHIEB. OF CITY, KANSAS, ASSIGNOB OF TWENTY-THREEOHE-HUHDBEDTHS TO JOHN DUKESHIEB AN D TWENTY-THREE ONE-HUNDBEDTHS '10OLAUSIN, IBOTH OF KANSAS CITY, KANSAS.

PBOPELLEB.

To all whom it may concern: 7

Be it known that I, WINTWORTH W. Dmsnmn, a citizen of the United States,residing at Kansas City, in the county of Wyandotteand State of Kansas,have 1nvented certain new and useful Improvements in Propellers and I dohereby declare'the scription of the invention, such as will enableothers skilled in the art to which it appertains 'to make and use thesame.

This invention relates to propellers and more particularly to devicesfor varylng the angle of the blades for varyin the speed;

and pulling power of the artic e propelled and also for reversing thedirection thereof.

An object of the invention is the provision of an improved and simplestructure for engaging and rotatin stub shafts on which are mounted thebla es of the propeller, so that the angle of the blades can be variedto reverse the direction of the article being propelled.

A further object of the invention is the provision of safety latchesunder the control of the operator of the article being propelled for(positively locking the blades in any desire position so that accidentalmovement thereof is eliminated.

With these and other .ob ects 1n v1ew, the

invention consists in the novel construction,

arrangement and formation of'parts as will be hereinafter specificallydescribed, claimed and illustrated in the accompanying drawin ,forming apart thereof, in which:

.i igure 1 is a side elevation of the 1mproved ropeller andmechanism'for varyingthe ange of the blades,

Fig. 2 is a vertical longitudmal section through the improved propellerand the mechanism for varying the angle of the blades thereof,

Fig. 3 is a transverse sectional view taken on the line 3-3 of Fig. 2, rY

Fig. 4 isan end elevation of the hub of the propeller showing theremovable end' wall,

5 is a transverse sectional view on the 4 Fig. 6'is a transversesectlonal view on the line 6'6 of Fig. 2,

Fig. 7 is a transverse section on the line 'i'( of Fig. 2 taken throughthe shaft, and

' Specification of Letters Patent. Patented Ju'ly 23, 1913, Applicationfiled June 1, 1911. V sci-m re. 112,302;

Fig. 8 is a detail perspective view showing one end of thelockmglatches.v Referring to the drawings in detail, wherem s1m1lar reference numeralsdesignate corresponding parts throughout the several v1ews,.the numeral1 generally indicates the nnproved propeller, which includes therectangular-hollow hub 2 and the hollow shaft 3 rigidly secured thereto,which extends to any .suitable type of prime mover (not shown); Thehollow shaft 3 isjournaled in suitable supports 4, which are secured bysuitable fastening elements to the floor of the article to which theimproved propeller is attached and the shaft 3 is prevented from movinglongitudinally on the supports 4 by collars 5 carried by the shaft 3 andenga ing the outer faces of thesupporting bracfie ets 4. 1

Each side face of the hollow hub 3 is pro.-

vided with a centrally disposed thickened ro ect1ng stud 6 having anaperture extendmg therethrough communicating with the interior of thehub and in which is journaled 1 a stub shaft 7 having a pinion 8 keyedto its inner end and a collar 9 to. hold the pinion in its correctposition on the stub ,shaft. Pinions 8 bear. against the inner surfacesof the side faces of the hollow hub 3 and limit the i I outward movementof the stub shafts.

A blade 10 having'an inner hollow s oke 11 is secured on the end of eachstub s aft 7 forrotati'on therewith, by means of remov-' able fasteningelements 12. A rack bar-.13

is provided for each pinion 8 and is in mesh therewith and is slidablymounted in a guide 14 'formedin each corner of the hollow hub. Theguides 14 are formed by'enlarging and striking out the corners of thehub 3 as at '15. The inner ends of the rack bars 13 are bent inwardlyasat 16 and are connected to the hollow shiftin rod 17 which is slidablymounted in the ho low shaft 3. The hollow.

shaft '3 is slotted as at 12' and slidably receives a pin 18, whichpasses through and is ri idly' secured to' the hollow shifting rod 17 ra jacent the free end thereof and has its ends rigidly connected to. asleeve 19. The

sleeve 19 has an annular groove v20 which slidably receives the inwardlyextending pins 21' removably carried by the sliding adjusting sleeve 22.The ad usting sleeve 22 has a downwardly extending lug 23 havrigidlycarries a ing abase secured thereto-and the lug justing sleeve 22 fromrotating with the shaft 3.

' An adjusting lever 2? is provided for shifting the adjusting sleeve 22and is pivotally secured intermediate the ends of the arcuate rack bar28 to the lug 29. A connecting link 30 is pivotally'secured to theadjusting sleeve 22 and the shifting lever 27 and upon'movement of thelever 27 the blades 10 can be adjusted to any angle dc sired. A slidingpawl 31 is provided for engaging the arcuate rack bar 28 for locking thelever 27 in any set position and has a suitable pivoted handle 32 andconnecting rod 33 to operate the same.

To positively lock the blades 10in any set osition and to take thestrain ofi' of the rack oars 13, a safety latch34 is provided for eachinion 8 to prevent the rotation thereof. he safety latches 3-4 havetheir forward ends provided with a tooth 35 for engagmg between theteeth of the pinion 8 and thus prevent the rotation thereof. The innerends of the latches 34 are bent inwardly as at 36 and connected to anadjusting rod 37 which is slidably received in the hollow ad justing rod1?. 'ihe free end of the adjusting rod 3? extends into the hollow shaft3 beyond the end of the shifting rod 17 and 33 which extends through aslot-39 in the hollow shaft The terminals of the in 38 are rigidlysecured in the sleeve 40 slidably mounted on the hollow shaft 3, whichhas an annular groove 41' formed therein which slidably receives thepins 42 removably carried by the shifting sleeve 43 rotatably mountedupon the sleeve 40. A lug 44 similar to the lug- 23 is slidably mountedin the groove 45 formed in a guide 46 and prevents the shifting sleeves22 and 43 from rotating with the shaft 3,, The shifting rod 37 isprovided with a slot- 37 through which extends the pin 18 carried by theshiftin sleeve 22 and this slot 37 allows the ho low shifting rod 17 tobe moved without moving the hollow shifting rod.

A shifting lever 47 similar to the shifting lever 27 is pivotall securedto the lug 48 intermediatethe on s to an arcuate rack bar 49, whichreceives a sliding pawl 50 controlled by a handle 51 and a connectingrod 52 and the lever 47 serves to adjust the safety latches 34 in or outof engagement with the inions 8, and the pawl 50 serves to hold the vatches 34 in locked or unlocked position.

A' removable end wall 53 is provided for the hollow hub 2 so that accessmay be readily had to the interior of the hub when necessary. The endwall 53 is slidably mounted in ides 54 formed bfy bending the freeends'of lzhe side walls 0 the hub uphub Lavepei wardly. and thendownwardly and has an operating-handle 55 formed thereon, so that thesame can be readily removed. The end wall- 53 is-held against accidentalmovement by suitable fastening means (not shown.)

In operation of the improved device,- the shifting lever 47 is pushedaway from the 2, which draws the safety latches 34 through the medium ofthe shifting rod 37 out of engagement with the pinions 8 and then theblade shifting lever-27 is moved in the direction desired which willturn the stub shafts 7 through the medium of the racks 13, the pinions 8and the sliding hollow shiftingrod 17, and when the desired angle of theblades is reached, theshifting lever 27 is released and the pawl 31isvallowed to engage the arcuate rack bar 28 and then the safety latches34 are thrown in engagement with the pinions 8 to positively preventmovement thereof.

lln practice, I have found that the form of myinvention, illustrated inthe accompanymg drawings and referred to in the above description, asthe preferred embodiment, is the most eficient and practical; yet

realizing the conditions concurrent with the adoption of my device willnecessarily vary, ll desire to emphasize the fact that various minorchanges in details of construction, proportion and arrangement of parts,may be resorted to, when required without sacri ficing any of theadvantages of my invention, as set forth.

What is claimed is l. In a device of the class described, a

hollow hub, a hollow shaft connected to the hub and extending rearwardlytherefrom,

stub shafts extending radially from and rotatably mounted inthe hollowhub, blades 7 carried the outer terminals of the stub shafts, pinionsmounted on the inner terminals of the stub shafts, means slidablymounted in the hollow shaft for rotating the pinions to vary the angleof the blades, and means for engaging the pinions to prevent rotationthereof.

2. In a device of the class described, a hollow hub, a hollow shaftconnected to the hub and extending rearwardly therefrom, stub shaftsextending radially from and rotatably mounted in the hollow hub, bladescarried by the outer terminals of the stub shafts, pinions carried bythe inner terminals of the stub shafts, rack bars slidably mounted inthe hollow hub and meshing with said pinions, said rack bars havingtheir inner terminals connected together, and a shifing rod slidablymounted in the hollow shaft and connected to the inner terminals of therack bars for rotating the pinions to vary the angle of the blades.

3. In a device of the class described, a hollow hub, a hollow shaftconnected to the hub and extending rarwardly therefrom,

stub shafts extending radially from and rotatably mounted in the hollowhub, blades carried by. the outer terminals of the stub shafts, pinionscarried by the inner terminals of the stub shafts, rack bars slid'ablymounted in the hollow hub and meshing with said pinions, Said, rack barshaving their inner terminals connected together, a shifting rod slidablmounted in the hollow shaft and connect to the inner terminals of therack bars for rotating the pinions to.

var the an 1c of the blades, and locking latc es slida ly mounted in thehub for engaging the pinions to prevent rotation thereof.

4. In a device of the class described, a

hollow hub, a hollow shaft connected to the hub, stub shafts extendingradially from and rotatably mounted in the hub, blades carried by theouter terminals of the stub shafts, pinions carried by the innerterminals of the stub shafts, rack bars slidably mounted in the hub andmeshing with the pinions, a hollow shiftin rodv slidably mounted in thehollow sha and connected to the inner terminals of the rack bars, slidmglatches adapted to engage the pinions to prevent rotation thereof, andindependent means for operating the rack bars and the locking latches.-c

In testimony whereof I aflix my signature in-presence of two witnesses.

' WINTWORTH W. DUKESHIER. Witnesses: Mrs. C. M. BARNm'r,

FANNm DAVIS.

